Fuel-economizer.



PATENTBD MAR. 14, 1905.

F. W. GREEN.

FUEL EUONOMIZER.

APPLIOATION FILED DBO. e, 1904.

NITED STATES Patented March 14, 1905.

PATENT OFFICE.

FUEL-ECONOMIZER.

SPECIFICATION forming part of Letters Patent NO. 784,560, dated March14, 1905.

Application filed December 6,1904. Serial No. 235,716.

To all 7071 0721, it m/n/y concern.-

Be it known that I, FRANCIS WILLIAM GREEN, a subject of the King ofGreat Britain, residing at Economiser \Vorks, Wakefield, county of York,England, have invented certain new and useful Improvements in Fuel-Economizers for Steam-Boilers, of which the following is aspecification.

The object of this invention is to so construct the top boxes andbranches of fuel-econoinizers that the lids can be easily and readilyplaced in position or removed, thereby greatly facilitating alterationsor repairs either to the top boxes or the pipes.

My invention will be clearly understood from the following description,aided by the accompanying drawings, in which Figure 1 is a sectionalelevation of the top box of a fuel-economizer, showing the lids inposition; and Fig. 2 is aplan of same.

For the purpose of this invention I make one, A, or more of thelid-holes in the top box B of a fuel-economizer slightly larger than theothers, B, so that all the lids C can be passed through such hole A andmoved under their respective lid-holes for connection to the hole in thewell-known manner. As is well known, the walls of the holes are angledfor receiving the lids, whose peripheries are also angled to suit theangle of the wall of the hole, the object being that the lid shall fitthe hole tightly when pulled up in place by the usual bridge or bolt.Now if one hole is made,

say, with its smallest diameter of a size onesixteenth of an inch largerthan the largest diameter of the lid all the lids can be passed throughthat hole for connection to the top box.

In the branch D, I make two slots E E along the walls and at rightangles to the box, so that the lid C for the larger hole A can beinserted into the top box B through the branch I) by causing the edgesof the lid 0 to ride in the slots E E, cut or formed in the branch, andbe easily removed therefrom in the same manner. By this construction Iam enabled to have six bolt-holes F in the branch flange G and also topass a larger lid into the top box B than by present knownconstructions.

What I claim, and desire to secure by Letters Patent, is

In a fuel-economizer, a top box or header having a plurality of holesone or more of which are of larger diameter than the others, to permitlids for the smaller holes to be passed therethrough, and having atubular branch with internal slots or grooves at right angles to the topbox of header to permit lids for the larger of said holes to be passedinto the box or header, as set forth.

In testimony whereof I have hereunto set my hand in presence of twosubscribing witnesses.

FRANCIS WILLIAM GREEN.

